flashrom读写flash bin文件

1、设备树中添加spidev0.0

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&spi0 {     /* Disable SPI NOR by default: it optional on Orange Pi Zero boards */     pinctrl-names = "default";     pinctrl-0 = <&spi0_pins>;     status = "okay";       spidev@0{         compatible = "Allwinner,sun8i-h2-spi0";         reg = <0>;         spi-max-frequency = <40000000>;                   // 128M spi-nor flash layout         partition@00000000 {             label = "u-boot";             reg = <0x00000000 0x000C0000>;         };               partition@000C0000 {             label = "bootenv";             reg = <0x000C0000 0x00020000>;         };            partition@000E0000 {             label = "dtb";             reg = <0x000E0000 0x00020000>;         };               partition@00100000 {             label = "kernel";             reg = <0x00100000 0x00500000>;         };            partition@00600000 {             label = "rootfs";             reg = <0x00600000 0x00A00000>;         };     }; };

2、驱动中添加compatiable

3、uboot配置

u-boot/configs/nano_c1_defconfig：

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1 2	CONFIG_SPI_SUNXI=y CONFIG_SPL_SPI_FLASH_SUPPORT=y

4、make menuconfig -->utils-配置flashrom包

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1	CONFIG_PACKAGE_flashrom=y

5、（查看读写的flash型号flashrom是否已经添加，没有添加自己需要添加）增加要读写的flash信息（以XMC为例）

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//flashchips.c文件     {         .vendor     = "XinXin",         .name       = "XM25QH128C",         .bustype    = BUS_SPI,         .manufacture_id = ST_ID,         .model_id   = ST_XM25QH128C,         .total_size = 16384,         .page_size  = 256,         /* OTP: 1536B total; read 0x48; write 0x42, erase 0x44 */         /* QPI: enable 0x38, disable 0xFF */         .feature_bits   = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_QPI,         .tested     = TEST_OK_PREW,         .probe      = probe_spi_rdid,         .probe_timing   = TIMING_ZERO,         .block_erasers  =         {             {                 .eraseblocks = { {4 * 1024, 4096} },                 .block_erase = spi_block_erase_20,             }, {                 .eraseblocks = { {32 * 1024, 512} },                 .block_erase = spi_block_erase_52,             }, {                 .eraseblocks = { {64 * 1024, 256} },                 .block_erase = spi_block_erase_d8,             }, {                 .eraseblocks = { {16 * 1024 * 1024, 1} },                 .block_erase = spi_block_erase_60,             }, {                 .eraseblocks = { {16 * 1024 * 1024, 1} },                 .block_erase = spi_block_erase_c7,             }         },         /* TODO: 2nd status reg (read 0x35, write 0x31) and 3rd status reg (read 0x15, write 0x11) */         .printlock  = spi_prettyprint_status_register_bp4_srwd,         .unlock     = spi_disable_blockprotect_bp4_srwd,         .write      = spi_chip_write_256,         .read       = spi_chip_read, /* Fast read (0x0B) and multi I/O supported */         .voltage    = {2700, 3600},     },

　定义设备和厂商ID

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1	//flashchips.h文件#define ST_XM25QH128C       0x4018

6、系统编译成功后会在/usr/sbin下生成flashrom工具

根据一下命令读写：

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1 2	read flash:    flashrom -p linux_spi:dev=/dev/spidev0.0 -r  flash.bin write flash:   flashrom -p linux_spi:dev=/dev/spidev0.0 -w  flash.bin

 其他命令也可以flashrom -h去查看

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root@OpenWrt:/# flashrom -h flashrom v1.2 on Linux 5.4.124 (armv7l) flashrom is free software, get the source code at https://flashrom.org   Usage: flashrom [-h|-R|-L|         -p <programmername>[:<parameters>] [-c <chipname>]                 (--flash-name|--flash-size|                  [-E|(-r|-w|-v) <file>]                  [(-l <layoutfile>|--ifd| --fmap|--fmap-file <file>) [-i <imagename>]...]                  [-n] [-N] [-f])]         [-V[V[V]]] [-o <logfile>]    -h | --help                        print this help text  -R | --version                     print version (release)  -r | --read <file>                 read flash and save to <file>  -w | --write <file>                write <file> to flash  -v | --verify <file>               verify flash against <file>  -E | --erase                       erase flash memory  -V | --verbose                     more verbose output  -c | --chip <chipname>             probe only for specified flash chip  -f | --force                       force specific operations (see man page)  -n | --noverify                    don't auto-verify  -N | --noverify-all                verify included regions only (cf. -i)  -l | --layout <layoutfile>         read ROM layout from <layoutfile>       --flash-name                  read out the detected flash name       --flash-size                  read out the detected flash size       --fmap                        read ROM layout from fmap embedded in ROM       --fmap-file <fmapfile>        read ROM layout from fmap in <fmapfile>       --ifd                         read layout from an Intel Firmware Descriptor  -i | --image <name>                only flash image <name> from flash layout  -o | --output <logfile>            log output to <logfile>       --flash-contents <ref-file>   assume flash contents to be <ref-file>  -L | --list-supported              print supported devices  -p | --programmer <name>[:<param>] specify the programmer device. One of     internal, dummy, gfxnvidia, drkaiser, satasii, atavia, it8212, ft2232_spi,     serprog, buspirate_spi, dediprog, developerbox, pony_spi, nicintel,     nicintel_spi, nicintel_eeprom, ogp_spi, linux_mtd, linux_spi,     usbblaster_spi, mstarddc_spi, pickit2_spi, ch341a_spi, digilent_spi,     stlinkv3_spi.   You can specify one of -h, -R, -L, -E, -r, -w, -v or no operation. If no operation is specified, flashrom will only probe for flash chips.